Variable sawmill-feed.



No. 825,865. PATENTED JULY 10, 1906.

E. D. ROCK.

VARIABLE SAWMILL FEED. Arpuonxou rrLBn mm. e, lao.

2 SHEETS-SHEET L Jafff,

No. 825,865. PTENTBD JULY 10, 1906x E. D. ROCK, VARIABLE SAWMILL FEED.

APPLIGATION FILED DEG. 5. 1905.

2 SHEETS-BREST 2.

gs 4m L, Aff

eren ca., snsnmanm n c EVEREII l). ROCK, OF NUTTSVILLE, VIRGINIA.

VARIABLE SAWNliLL-FEED.

No. 825,865. Specification of Letters Potent PetentedAJuly 10, 1906.

Application filed Breceimber 6, 1905- Serial No. 290.633'

To all whom t 11i/ty concern.' Y Y, i

Be it known that I, Evnnnr'r DoirsrnY Roon, e citizen oi' the UnitedStates, residin Y et Nuttsville, in the county of Lancaster an Stete ofVirginie,lieve invented new and useulIinprovenients in VariableSawmill-Feed, of which the following is e speoiicetion.

This invention relates to en improved sewmill-eed, and has for itsobject to provide e novel construction und nrrsngement of parts in e'machine in which :t combined variablefeed end reversing mechcnisinlisoperated drectly from the mein driving-shaft Without the interpositionof belts end which provides for e variable movement of-V the`sevv'noill-cur'-l riego in either the forward ori hckwerd move; mentthereof' und for the reversal of 'the movement of seid carriagethroughtleln'iedium of a single rietonwheei.

The invention has for its objeotto rovide a novel errsngenientoicoeratng -[ictionf- Y allyengsged members the'dbgree of contectpressurebetween all of which may be simulf;F teneously varied. r e" Theinvention also has for its obj ectse'J novel construction of mechanismfor moving V4the friction-Wheel which controls the rete end di-V.rection of movement of the earrings end e', novel mechanism for forcingseid friction-'- Wheel into contact with theieceuvheel which drives theseine with greater or less force or for en'tireltT removing the saidfrictiori-WheelV from Contact wth'such fece-wheel.

In addition to the cbovesenumereted ob jects of the invention furtherobjectsfreside in certain novel details of construction combination andoperation of ports, eiof' which will be more clearly understood orniVthe detailed description to follow. il

The invention is illustrated in. the'eccompanying drawings, in Which- YY Y Figure 1 is e plenview of the variable-feed mechanism mountedugonthe husk frame. Fig. 2 is e detail perspective view showing thevarious erts of the mechanism or operating the friction-cintchgsndfEg. Sis e sec tional detail view of pert of the'operatingJ mechanism.Y Y

Referring now to the drawings, 1 indicates e husk-treme on which ismounted in beerings 2 e mandrel 3, having secured on one end e circulersaw 4 and on lts other end a. belt- Y pulle 5, by ineens of which seidmandrel may e driven by e bolt, sensuel. Secured on the shaft 3intermediate its ends is -clso e Vperipheral contest transverse ing 15being mounted in e support i7, whirh 70,1"

secured to which is e' beveled geer 21.;

YIvhich in turn is pivotelly with oppositely-bev- Veled peperfrictionpulleg,T 7, secured on e shoit', which is sli ably mounted forlongitudinal movement in bearings 9, supported .6o on supplementalfreine members 1() of the ireme 1. The shaft 8 has mounted on one end a,metal fecswleel l1, the outer fece of which is ede ted to be rictionallyengaged by e oper iction-Wheel l2, ke ed to and slideb e on eshaft 13.YThe s uit V13 is mounted in pivotcd bearings 14 15, respectively, thebearing 14 being mounted on a,

freineQ member 16 and the bear is pvotelly mounted` at its lower end onthe husk-freine, as irniicntrd ati'. At one end tghe shaft i3 hes'secured thereon e pinion 19, v' which isin mesh with e largegear-Wheelflg), s 7

gein*Y 2G and beveled gear 21 are securedV to 'e s short shaft @Freilichis suitably mounted in Y33 indcetesilfsheft ,also suitably mounted inVthe 'huskfrme alnd"projecting laterally 8o beyond the seine end-havinon its outer end e geer 24, which is adapted to mesh with e reckibsr(not'sho ,l Carried by the sawmillcerriage, es usual." I le shaft Y23has secured on'its inner Vend pb'eveled gear 25, Whichis 85 in 'meshwith the-Heveled gear 21.

The mechanism for moving the frictionwheel 12 over the fece of the Wheel11 will nonr be described. Suported on' the freine 1' is e stand 26, inwhic 1s mounted for rota- 9o Ytion"sr'o'd' 27', having secured on itslower end e crank-arm 28, provided with en integral crank-pin 29,'Whichensges and works 1n a. slot 30 of e lover 3l. Y id lever pivotallyconnected to one of its-lends a. vlink 32, g5

connected at its outer end to the freine 1.V The'opposite end of thelever 31 is pivotelly connected to c. ber

33, which hes en outer forked end 34. This outer forked end embraces undhas e pin-andi no groove connection with e hub 35, connected to theinner fece of the friction-wheel Y12. The rod EHlss en angularprojecting erm 36,V

to the outer end of which is pivotellly connected e handle 37. Bthrowing this hsnm5 dle in one direction or t e other the rod 27 islelso corresiondingly turned and through the rnediuni o thecrenk-ernrsssndle'ger 31 will move the hei?, on'tudinailg an onedirectionio'r theother. T e letter er hevnc Y connected with the hubbeveled motel friction-pulley 6, which is in ing its forked end 34 ofthe friction-wheel 12, es described, 'will pull said wheel along theshaft 13 toward or from the center of the face-wheel 11. As will beseen, the nearer the wheel 12 approaches the center of the face-wheel 11the more slowl the former will be rotated, and if the whee 12 is carriedpast the center of' the facewheel 11 the direction of rotation of theformer will be reversed. While in its position at either side of thecenter of the face-wheel the friction-wheel can be made to occupy anydesired position between the periphery and center of the face-wheel, sothat the movement of the sawmill-carriage effected through the medium ofthe gear 24 can be varied as desired in either direction of movement ofsaid carriage, the variable feed or movement and the reversal ofmovement being effected, as Will be seen, through the medium of a sinlefriction-wheel 12, cooperating with the ace-wheel 11. It is desirablethat the frictional driving member described shall be in firm contactWhile the machine is actually used in sawing Wood and in less rm contactwhen the machine is running Without sawing, and it is, moreover,desirable to remove the friction-wheel 12 from contact with the face ofthe Wheel 11 to stop relative movement of the parts. T o effect thisadjlustment I employ the mechanism which wil now be described. Securedon the upper side of the handle 37 is an eyebolt 38, m which ispivotally mounted a bail 39, the outer ends of which embrace and arepivotally secured to a sleeve 40. The sleeve 40 is provided with anannular groove 41, in which is rotatably mounted a ring 42, having ondiametrically opposite sides lugs 43.

44 indicates a throw-lever having an outer forked end 45, said forksbeing recessed or bifurcated at their outer ends, as indicated at 46, toembrace the lugs 43. The throwlever 44 is integrally or otherwiseconnected with a rock-shaft 47, extending longitudinally of the frame 1and supported in bearings 48 thereon and having at its outer end anintegral arm 49, extendin at right an les thereto. This arm is pivota 1yconnecte to one end of a strap 50, which at its outer end is pivotallyconnected to the upper end of the support 17. The throw-lever 44 extendsu wardly from its point of connection with t e rock-shaft 47 to thesleeve 40. It will now be seen that if the handle 37 is lowered thesleeve 40 will be corres ondingly lowered, said sleeve sliding over t erod 27, and the outer forked end of the throw-lever will be carried downby its engagement with the lugs 43 of the ring 42, whic atter is mountedon the sleeve 40, and this operation will result in turning therock-shaft 47, thereby through the medium of the arm 49 and strap 50throwing the sup ort 17 inward and causing the riction-whee 12 tofrictionally engage the face of the wheel 11. The wheel 12 can be madeto engage the face of the Wheel 11 more or less firmly, according to thedownward. pressure applied to the handle 37. As the shaft 8, on whichthe face-wheel 11 is mounted, is also slidable the pressure applied tothe wheel 11 will also operate, owing to the incline of the pulley 6 andbeveled riction-pulley 7, to cause these latter parts to engage morefirmly, and, as in the case of the friction-wheel 12 and wheel 11, theenga ement between the pulley 6 and the beve ed friction-pulley 7 willbe greater or less according to the pressure applied to the handle 37.'By raisin the handle 37 a greater or less extent the iction members maybe caused to engage less firmly, so as to decrease the amount of thefriction at the bearings of the various shafts, and by raising thehandle 37 a sufficient extent the friction-Wheel 12 may be entirelyremoved from contact with the face of the Wheel 11 and the movement stoped. The

revision of means for relieving tlhe pressure of frictional contactbetween the friction members is a very important part of the invention,as by relieving undue pressure on the boxes or bearings when the mill isnot feeding said boxes or bearings will remain cool, even if throughneglect they should not be oiled often.

In order to hold the handle 37 in any desired adjustment, I rovide onthe upper end of the rod 27 a qua ant 51, having notches 52, which areadapted to be engaged by a s ring-latch device 53, carried by the han-It will be seen that I entirely dispense with belt-gearing. The arraement of the friction-pulley on the mandre and of the beveledfriction-pulley which works against it tends to even up the pressure onthe mandrelboxes, caused by the strain on the drivingbelt working 0n thepulley 5, and keeps the boxes from wearing out of true.

I claim# l. In combination with a driven mandrel, a beveledfriction-pulley mounted thereon, a longitudinall -movable and rotatableshaft, a beveled friction-pulle and a face-Wheel mounted thereon, saideveled friction-pulley {rictionally engaging the periphery of saidfriction-pulley and being in the same lane as the latter, a drivenshaft, and means or driving said shaft from said face-Wheel comprising ashaft, a friction-wheel keyed thereon and adapted to rictionally engagesaid face-Wheel, means for moving the said latter shaft toward and fromsaid face-Wheel and means for moving said friction-whee transverselyover the face of said face-Wheel.

2. In combination with a driven mandrel, a variable-feed devicecomprising a facewheel, means for rotating said face-wheel from saidmandrel, a driven shaft, means for driving said shaft comprisin apivotallynit, unted shaft, a friction-Whee keyed on said IOO IIO

pivotelly-nmunted shaft und adapted te frictionnlly engage sindfece-Wheel, e rotatable rod, :L handle pivot-silly' associated therewithfor turning the sume7 a crunk on seid rod heving :i pin, e beroperativel f associated at 011e end with said friction-wheel, apiv0tallymounted lever pivotelly connected to said ber und having a.slot receiving said pin, whereby the turning of seid rod will cause saidfriction-Wheel to move transversely over the fece of seid face-wheel,and mechanism comprising e rock-shaft operatively connecting said handleand said pivotally-mountecl shaft whereby upon raising or lowering seidhandle said pivotally-mounted shaft may be 15 moved toward or from seidfece-Wheel.

In testimony whereof I have hereunto set my hand in presence of twosubscribing Witnesses.

EVERETT D. ROOK.

Witnesses:

J. WM. OHOWNING, F. C. SADLER.

